insdelln.c revision 1.15
1/* $NetBSD: insdelln.c,v 1.15 2008/04/28 20:23:01 martin Exp $ */ 2 3/* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Julian Coleman. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33#ifndef lint 34__RCSID("$NetBSD: insdelln.c,v 1.15 2008/04/28 20:23:01 martin Exp $"); 35#endif /* not lint */ 36 37/* 38 * Based on deleteln.c and insertln.c - 39 * Copyright (c) 1981, 1993, 1994 40 * The Regents of the University of California. All rights reserved. 41 */ 42 43#include <string.h> 44#include <stdlib.h> 45 46#include "curses.h" 47#include "curses_private.h" 48 49#ifndef _CURSES_USE_MACROS 50 51/* 52 * insdelln -- 53 * Insert or delete lines on stdscr, leaving (cury, curx) unchanged. 54 */ 55int 56insdelln(int lines) 57{ 58 return winsdelln(stdscr, lines); 59} 60 61#endif 62 63/* 64 * winsdelln -- 65 * Insert or delete lines on the window, leaving (cury, curx) unchanged. 66 */ 67int 68winsdelln(WINDOW *win, int lines) 69{ 70 int y, i, last; 71 __LINE *temp; 72#ifdef HAVE_WCHAR 73 __LDATA *lp; 74#endif /* HAVE_WCHAR */ 75 attr_t attr; 76 77#ifdef DEBUG 78 __CTRACE(__CTRACE_LINE, 79 "winsdelln: (%p) cury=%d lines=%d\n", win, win->cury, lines); 80#endif 81 82 if (!lines) 83 return(OK); 84 85 if (__using_color && win != curscr) 86 attr = win->battr & __COLOR; 87 else 88 attr = 0; 89 90 if (lines > 0) { 91 /* Insert lines */ 92 if (win->cury < win->scr_t || win->cury > win->scr_b) { 93 /* Outside scrolling region */ 94 if (lines > win->maxy - win->cury) 95 lines = win->maxy - win->cury; 96 last = win->maxy - 1; 97 } else { 98 /* Inside scrolling region */ 99 if (lines > win->scr_b + 1 - win->cury) 100 lines = win->scr_b + 1 - win->cury; 101 last = win->scr_b; 102 } 103 for (y = last - lines; y >= win->cury; --y) { 104 win->lines[y]->flags &= ~__ISPASTEOL; 105 win->lines[y + lines]->flags &= ~__ISPASTEOL; 106 if (win->orig == NULL) { 107 temp = win->lines[y + lines]; 108 win->lines[y + lines] = win->lines[y]; 109 win->lines[y] = temp; 110 } else { 111 (void) memcpy(win->lines[y + lines]->line, 112 win->lines[y]->line, 113 (size_t) win->maxx * __LDATASIZE); 114 } 115 } 116 for (y = win->cury - 1 + lines; y >= win->cury; --y) 117 for (i = 0; i < win->maxx; i++) { 118 win->lines[y]->line[i].ch = win->bch; 119 win->lines[y]->line[i].attr = attr; 120#ifndef HAVE_WCHAR 121 win->lines[y]->line[i].ch = win->bch; 122#else 123 win->lines[y]->line[i].ch 124 = ( wchar_t )btowc(( int ) win->bch ); 125 lp = &win->lines[y]->line[i]; 126 if (_cursesi_copy_nsp(win->bnsp, lp) == ERR) 127 return ERR; 128 SET_WCOL( *lp, 1 ); 129#endif /* HAVE_WCHAR */ 130 } 131 for (y = last; y >= win->cury; --y) 132 __touchline(win, y, 0, (int) win->maxx - 1); 133 } else { 134 /* Delete lines */ 135 lines = 0 - lines; 136 if (win->cury < win->scr_t || win->cury > win->scr_b) { 137 /* Outside scrolling region */ 138 if (lines > win->maxy - win->cury) 139 lines = win->maxy - win->cury; 140 last = win->maxy; 141 } else { 142 /* Inside scrolling region */ 143 if (lines > win->scr_b + 1 - win->cury) 144 lines = win->scr_b + 1 - win->cury; 145 last = win->scr_b + 1; 146 } 147 for (y = win->cury; y < last - lines; y++) { 148 win->lines[y]->flags &= ~__ISPASTEOL; 149 win->lines[y + lines]->flags &= ~__ISPASTEOL; 150 if (win->orig == NULL) { 151 temp = win->lines[y]; 152 win->lines[y] = win->lines[y + lines]; 153 win->lines[y + lines] = temp; 154 } else { 155 (void) memcpy(win->lines[y]->line, 156 win->lines[y + lines]->line, 157 (size_t) win->maxx * __LDATASIZE); 158 } 159 } 160 for (y = last - lines; y < last; y++) 161 for (i = 0; i < win->maxx; i++) { 162 win->lines[y]->line[i].ch = win->bch; 163 win->lines[y]->line[i].attr = attr; 164#ifndef HAVE_WCHAR 165 win->lines[y]->line[i].ch = win->bch; 166#else 167 win->lines[y]->line[i].ch 168 = (wchar_t)btowc((int) win->bch); 169 lp = &win->lines[y]->line[i]; 170 SET_WCOL( *lp, 1 ); 171 if (_cursesi_copy_nsp(win->bnsp, lp) == ERR) 172 return ERR; 173#endif /* HAVE_WCHAR */ 174 } 175 for (y = win->cury; y < last; y++) 176 __touchline(win, y, 0, (int) win->maxx - 1); 177 } 178 if (win->orig != NULL) 179 __id_subwins(win->orig); 180 return (OK); 181} 182